If you look across space with a telescope, you'll see countless galaxies, most of which host large central black holes, ...

It’s always amazing, and more than a little humbling, when the universe reminds us that our “common sense” is provincial, ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Astronomers analyzing Sloan Digital Sky Survey data stumbled onto something they weren’t expecting: a structure stretching ...

The Universe is big, as Douglas Adams would say. The most distant light we can see is the cosmic microwave background (CMB), which has taken more than 13 billion years to reach us. This marks the edge ...

WASHINGTON — Using data from NASA’s Wilkinson Microwave Anisotropy Probe (WMAP), scientists have identified an unexpected motion in distant galaxy clusters. The cause, they suggest, is the ...

The surface of Earth is finite. We can measure it. If it was expanding, then its size would grow with time. And once again, good ol' Earth helps us understand what the universe might be doing beyond ...

Imagine being able to gaze at the very edge of the observable universe and witness a dazzling array of galaxies. NASA has now made this extraordinary experience possible by releasing an expansive map ...

Scientists have many big questions to tackle about the universe, including how big it actually is. But even the proposed ...

The observable universe's expansion from a sub-millimeter initial state is a consequence of its ongoing expansion, implying higher densities and temperatures in its earlier stages. The observable ...

The universe is literally everything, the sum of all existence. It includes all matter, like stars and galaxies. The universe also includes all radiation and all other forms of energy. No matter where ...